主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
Fire Science and Technology

Fire Science and Technology ›› 2021, Vol. 40 ›› Issue (3): 402-405.

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Sealing effect of aqueous film forming foam on the surface of aviation kerosene

CHEN Xian-tao, ZHANG Xu, JIA Jing-yun, MENG Ya-wei, WANG Yao-shuai   

  1. College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Sichuan Guanghan 618307, China
  • Online:2021-03-15 Published:2021-03-15

Abstract:

 In this paper, the sealing property of AFFF covering on the surface of fuel oil was verified by using different ambient temperature and different foam concentration, and the sealing property of AFFF changing with ambient temperature and foam concentration was analyzed by measuring the concentration of combustible vapor and detection time. The experimental results show that the sealing property of AFFF becomes worse with the increase of ambient temperature. For 3% AFFF, the initial detection time of flammable vapor at 40 ℃ is 149 s longer than that at 80 ℃; When the ambient temperature was 40 ℃, the time of detecting flammable vapor with 6% AFFF was 433 s longer than that with 3% AFFF. 

Key words:

 , sealing, combustible vapors, ambient temperature, foam ratio concentration